Numbers beginning with 513-749

Cincinnati, the third largest city in Ohio and the 25th largest city in the United States by metropolitan population and the county seat of Hamilton County, Ohio, United States. Settled in 1788, the city is located on the border between Ohio and Kentucky at the confluence of the Ohio River and the Licking River. According to the 2010 census, the population of the metropolitan area was 2,214,954 - the 25th largest Metropolitan Statistical Area (MSA) in the United States and the largest in Ohio. Residents of Cincinnati are called Cincinnatians. source

North American area code 513 serves southwest Ohio including Cincinnati and many surrounding cities, such as Forest Park, Hamilton, Lebanon, West Chester, Mason, Middletown, Norwood, Oxford, Harrison, Cleves, Miamitown and Trenton. source